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Official Blizzard notes

World of Warcraft Hotfixes: September 15, 2026

33 entries posted by Blizzard Entertainment for this date, shown in full.

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September 15, 2026

26 entries

Source Hotfixes: September 15, 2026, by Blizzard Entertainment (worldofwarcraft.blizzard.com)

Dungeons and Raids

The Venomous Abyss

Sszorak

  • Tempest damage reduced by 20% on Heroic and Mythic difficulties.
  • Caustic Claws no longer forms a pool of Caustic Residue on Heroic difficulty.

Twin Fangs

  • Corrosive Spit damage reduced by 20% on Mythic difficulty.
  • Reduced the amount of Broodlings of Ithraz spawned by Rouse the Brood to 10.
  • Visceral Burst cast time increased by 0.5 seconds.

The Coiled Altar

  • Venom Rupture damage reduced by 10% on Heroic and Mythic difficulty.
  • Mutagenic Venom damage reduced by 15%.
  • Wail of Terror cast time increased to 12 seconds on Heroic difficulty.
  • Wail of Terror cast time increased to 10 seconds on Mythic difficulty.
  • Spiteful Soulcoiler's spawning and relocation when interrupted are now more predictable.
  • 1 Spiteful Soulcoiler will always spawn nearby Malacrass on Mythic difficulty.
  • The number of players targeted by Dreadmarch no longer increases throughout the phase on all difficulties.
  • Manifestations of Dread now deprioritize fixating on players that currently have Unnerving Fixation.
  • Manifestations of Dread revealed by interrupting Wail of Terror now remain visible for an additional 3 seconds.
  • The number of Fragments of Malacrass that spawn during the intermission reduced by 25% on Mythic difficulty.
  • Fixed an issue where Coalesced Venoms and Virulent Mutations would fail to drop on the ground if a priest carrying one enters Spirit of Redemption.

Ula’tek

  • Failing to stand within Mother's Wrath now only inflicts 1 stack of Stone Venom onto the raid on Raid Finder difficulty.
  • Doomscale Warden's Malice cast time increased to 5 seconds (was 1.5 seconds) and damage reduced on Raid Finder difficulty.
  • The number of Bligthscale Spawn reduced to 6 during Stage 2 on Raid Finder difficulty.
  • Ula'tek's Unchecked Rage damage reduced on Raid Finder difficulty.
  • Gore Rattler's Rattler Slam damage reduced on Raid Finder difficulty.
  • Stone Venom damage reduced on all difficulties.
  • Putrid Membrane duration reduced to 30 seconds on Mythic difficulty (was 1 hour).
  • The number of Blightscale Spawn summoned from Serpent's Call reduced to 8 per wave during Stage 1 on Mythic difficulty (was 13).
  • The number of Blightscale Spawn reduced to 12 per side during Stage 2 on Mythic difficulty (was 14).
  • The number of eggs dropped by Serpent's Call during the intermission reduced to 8 on Mythic difficulty (was 14).

Named in these notes

Blizzard's notes for September 15, 2026 name 1 spell, 1 dungeon or raid and 4 bosses. Each opens its page here; the count is how many lines mention it.

Spells (1)

Dungeons and raids (1)

Bosses (4)

The Spells in These Notes, as the Game Data Has Them

Each spell the notes name, read from the current game build: school, cast time, duration, the skill line that teaches it and its tooltip with amounts left out.

  • Spirit of Redemption Named in 1 of these notes. Holy, instant, lasts 6 sec. Taught through the Priest skill line. Current tooltip: “The Priest becomes the Spirit of Redemption for 6 sec. The Spirit of Redemption cannot move, attack, be attacked or targeted by any spells or effects. While in this form the Priest can cast any healing spell free of cost.”

The Instances and Bosses in These Notes

How this page is built

Every entry above is Blizzard Entertainment's own hotfix note, shown in full and in the order Blizzard posted it: nothing is summarised, paraphrased or added, and each date block links to the original article. The tracker reads Blizzard's official hotfix post every 30 minutes and keeps every date it has seen, so an older day stays here after it rolls off the article. Where a hotfix names a spell, item, boss, instance, zone, faction or achievement that has a page on this site, the name links to it; a name that could mean more than one record is left as plain text rather than guessed. A date with no hotfixes is simply absent.